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All Journal Jurnal Teknik Elektro Universitas Tanjungpura ELKHA : Jurnal Teknik Elektro Rekayasa Mesin Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Jurnal Abdi Insani Jurnal Geuthee Proyeksi: Jurnal Ilmu-Ilmu Sosial dan Humaniora Telecommunications, Computers, and Electricals Engineering Journal Journal of Electrical Engineering, Energy, and Information Technology
Usman A. Gani
Jurusan Teknik Elektro, Fakultas Teknik, Universitas Tanjungpura Pontianak
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Social Sciences Other

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Correlation Study of The Number of Cloud to Ground Lightning Strikes With Rainfall in The City of Pontianak Pujianda, Tegar; A. Gani, Usman; Danial, Danial
Journal of Electrical Engineering, Energy, and Information Technology (J3EIT) Vol 12, No 1: April 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/j3eit.v12i1.70542

Abstract

Research has been conducted on lightning strikes with rainfall to determine the relationship between the two. The problem in this study is how the relationship between lightning clouds to the ground with rainfall in Pontianak City. The lightning data used is lightning detector data originating from the BMKG Supadio Station and rainfall on the BMKG website. The method used in this study performed a linear regression test and a correlation test using the Spearman correlation method. The results obtained show a relationship between rainfall and cloud lightning to the ground daily with a Spearman correlation of 0.2237 which means that the relationship between the two variables has weak strength. The strength of the relationship between the number of cloud lightning strikes to the ground with low rain intensity and the 22.37% relationship between rainfall intensity and the number of cloud lightning to the ground. The correlation coefficient obtained is positive. The relationship between the two variables is unidirectional and can be interpreted that high rain intensity will cause the number of lightning strikes to increase. The intensity of rainfall determines less the size of the number of cloud lightning strikes to the ground. The correlation value between the number of cloud lightning strikes to the ground and the intensity of rainfall in Pontianak City in the weak correlation category with a small value (R2) close to zero. The coefficient of determination is 0.088. This means that 8.8% of the variation from lightning strikes can be explained by variable variations in rainfall.
Design Of Palm Shell Charcoal Media For Earthing Systems haris, muhamad abdul; rajagukguk, managam; Gani, usman a
Journal of Electrical Engineering, Energy, and Information Technology (J3EIT) Vol 12, No 1: April 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/j3eit.v12i1.74695

Abstract

The grounding system is an important part that must be considered to ensure the safety and reliability of the operation of the electric power system. The grounding system has an influence on the smoothness and safety of the electric power system, especially when there is a disturbance related to the ground. The aim of the grounding system is to limit the voltage between the equipment and the ground to a safe condition for all operations, both normal conditions and when a disturbance occurs. . The earthing resistance value in a building is 5Ω, while for earthing electronic equipment a grounding resistance value of 3Ω is required and for lightning arrester equipment or arresters it is 1.75Ω and some devices even require an earthing resistance value of 1Ω. The design for the construction of Palm Shell Charcoal Media for Earthing Systems was made by considering several problems, such as how to reduce the resistance value to comply with standards (PUIL). One of the efforts made is to design the addition of palm oil shell charcoal with variations in hole diameter and depth of planting the charcoal in the media. The results showed that factors such as the diameter of the charcoal planting medium and the depth of rod planting had a positive influence on the resistance value. The solution that can be applied to achieve optimal earthing resistance values is to increase the diameter of the charcoal media and deepen the rod planting
STUDY OF SIEMENS 7UT86 PERCENTAGE DIFFERENTIAL RELAY AS PROTECTION OF 60 MVA POWER TRANSFORMER AT 150 GIS KV DAYEUH KOLOT Purba, Dian Andreas; Gani, Usman A; Danial, Danial
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 2: October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i2.84598

Abstract

Power transformer is a vital equipment in the electric power system that plays an important role in distributing electrical energy from the generator to the load center. Transformers require a protection system that is able to detect an internal or external disturbance with a very fast time to prevent widespread blackouts. Transformer protection generally uses differential relays that require settings in determining their working parameters. On this basis, the authors conducted a study of the Siemens 7UT86 percentage differential relay as a 60 MVA power transformer protection at the 150 kV Dayeuh Kolot GIS, by taking data to perform mathematical calculations to obtain working parameters and testing. The results of mathematical calculations obtained the rating current value used to select the ratio of installed CT to differential current. The relay is set using slope 1 of 30% and slope 2 of 80% and a differential current of 0.3 I/IrObj to prevent unnecessary blackouts due to the appearance of differential currents by magnetizing currents, inrush, tap changers, CT saturation and as a safety factor. Tests using Omicron test equipment obtained results in the form of actual differential current values of both slope areas, angular stability, current and angular ramping and relay operation delay times. Testing the working parameters of the relay obtained the result that the relay works by commanding the circuit breaker to trip when it exceeds the pick up value. During internal faults and at faults below the pick up value and during external faults the relay standsby.
STUDI PENGARUH PENAMBAHAN GARAM TERHADAP RESISTANSI PEMBUMIAN DI TANAH GAMBUT Ulhaq, Zia; Rajagukguk, Managam; Gani, Usman A
Journal of Electrical Engineering, Energy, and Information Technology (J3EIT) Vol 10, No 2: Juli 2022
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/j3eit.v10i2.56714

Abstract

Sistem pembumian merupakan sistem pengamanan terhadap perangkat yang menggunakan listrik sebagai sumber tenaga dari lonjakan listrik, khususnya tenaga petir. Memperhatikan kualitas nilai resistansi pembumian sangat penting, salah satunya ialah pengaruh kandungan zat aditif berupa garam pada Elektroda vertikal (driven rod) sehingga dapat mempengaruhi nilai resistansi pembumian. Karena garam merupakan suatu elektrolit yang dapat menghantaran arus listrik ke dalam tanah sehingga dapat meningkatkan konduktivitas atau daya hantar listrik di dalam tanah, khususnya di tanah gambut kering dan basah. Melakaukan pengukuran resistansi pembumian tanpa penambahan garam dan dengan penambahan garam di tanah gambut, agar dapat melihat penurunan nilai resistansi pembumian. Penelitian ini dilakukan dengan tiga batang elektroda yang panjangnya bervariasi yaitu 100 cm, 200 cm dan 300 cm yang di tanam pada kondisi tanah gambut kering dan tanah gambut basah. Hasil pengukuran  pada kondisi tanah gambut kering tanpa garam pada kedalaman 100 cm = 35,88 (Ω), kedalaman 200 cm = 5,9 (Ω), dan kedalaman 300 cm = 4,4 (Ω) dan pada kondisi tanah gambut kering dengan garam pada kedalaman 100 cm = 10,49 (Ω), kedalaman 200 cm = 4,50 (Ω), dan kedalaman 300 cm = 3,78 (Ω). Hasil pengukuran  pada kondisi tanah gambut basah tanpa garam pada kedalaman  100 cm = 33,38 (Ω), kedalaman 200 cm = 5,07 (Ω) dan kedalaman 300 cm = 3,99 (Ω) dan pada kondisi tanah gambut basah dengan garam pada kedalaman 100 cm = 9,75 (Ω), kedalaman 200 cm = 4,11 (Ω) dan kedalaman 300 cm = 3,47 (Ω).
PERANCANGAN OPTIMUM SISTEM PLTS PADA PUSKESMAS TERIGAS DI KABUPATEN SAMBAS Alvian, -; Khwee, Kho Hiee; Hiendro, Ayong; -, Yandri; Gani, Usman A
Journal of Electrical Engineering, Energy, and Information Technology (J3EIT) Vol 10, No 2: Juli 2022
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/j3eit.v10i2.60234

Abstract

Kabupaten Sambas yang merupakan daerah jika di lihat secara kasat mata merupakan daerah dengan intensitas matahari yang cukup tinggi dengan suhu maksimum mencapai 34˚C dan minimum 23˚C menjadi daerah yang potensial untuk di kembangkan sebagai alternatif pembangkit listrik terbarukan. Maka dilakukan perancangan optimum sistem PLTS pada Puskesmas Terigas menggunakan software HOMER.Membandingkan biaya energi listrik antara sistem PLTS dan PLN pada Puskesmas Terigas di Kabupaten Sambas. Pada penelitian ini menggunakan beberapa data sekunder. Data sekunder yang digunakan berasal dari beberapa sumber berbeda yang dapat dipertanggung jawabkan keaslian dan keaabsahannya. Pembangkit Listrik Tenaga Surya (PLTS) dapat memenuhi kebutuhan energi listrik yang ada di Puskesmas Terigas selama 24 jam, dengan asumsi beban sebesar 60,74 kWh/hari.energi listrik selama 1 tahun sebesar 22.170 kWh/tahun. Mengunakan perencanaan ini adalah PLTS Off grid dengan konfigurasi dari panel surya – inverter – baterai. Hasil analisis teknis untuk memenuhi kebutuhan energi listrik secara off grid yang paling optimal, menggunakan panel surya sebesar 18,8 kW, inverter sebesar 6 kW, dan baterai sebanyak 30 buah. Daya yang dapat diproduksi oleh PLTS ini sebesar 27.276 kWh per tahun. .Berdasarkan analisis ekonominya maka didapat nilai NPC sebesar Rp397.653.399,95 Annualized Cost (AC) sebesar Rp28.148.217,50 serta biaya energi yang di keluarkan oleh PLTS sebesar Rp1.269,65 / kWh. Biaya energi PLN sebesar Rp1.699,53/kWh,biaya energi PLTS sebesar Rp1.269,65 / kWh lebih rendah dibangdingkan biaya energi dari PLN.
Comparative Study of Grade Cold Rolled Grain Oriented as The Core of A 3 Phase 200 kVA Distribution Transformer Using Ansys Maxwell Huvat, Alexander; Rajagukguk, Managam; A. Gani, Usman
Journal of Electrical Engineering, Energy, and Information Technology (J3EIT) Vol 12, No 3: December 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/j3eit.v12i3.89047

Abstract

This research discusses a comparative analysis of Cold Rolled Grain Oriented (CRGO) material as the core of a 3-phase 200 kVA distribution transformer using Ansys Maxwell software. CRGO material has several grades, namely M-3, M-4, M-5, and M-6, which differ in lamination thickness and core loss characteristics. The study aims to analyze and compare the flux density and core losses of the transformer with each CRGO grade. Simulations were conducted using Ansys Maxwell to compare flux density and losses for each CRGO grade to determine the most efficient material for use as a transformer core. The simulation results show that flux density increases over time across all tested CRGO grades, with grade M-3 exhibiting the highest flux density, followed by M-4, M-5, and the lowest being M-6. The simulation results for core losses are as follows: 226.2172 W for grade M-3, 242.1566 W for grade M-4, 259.2061 W for grade M-5, and 298.1239 W for grade M-6. Hysteresis and eddy current losses tend to be lower in lower-grade CRGO (M-3) compared to higher-grade CRGO (M-4, M-5, and M-6) due to the smaller lamination thickness in lower grades and larger lamination thickness in higher grades.
Co-Authors -, Yandri Alvian, - Ayong Hiendro Danial - Eddy Kurniawan Fitri Imansyah Greamaldy, Gheary haris, muhamad abdul Huvat, Alexander Intan Dwi Septiarini Iqbal Arsyad khairul Umam Kho Hiee Khwee Khwee, Kho Hiee Lalak Tarbiyatun Nasyin Maleiva M. Ismail Yusuf Managam Rajagukguk Managam Rajagukguk Marcelina Marcelina, Marcelina Pujianda, Tegar Purba, Dian Andreas R.M. Bambang S Rakasiwi, Rinjani Regatra, Mexsy Rudi Kurnianto Salasi R Siti Helmyati Syahrul Khairi Syaifurrahman Syaifurrahman Tri Wahyuda Wivina Diah I Zia Ulhaq, Zia